writeDcbFile: Write data table's dcb file
In dkyleward/caliperR: Interacct with Caliper Software from R

To write the data table into a TransCAD binary file (.bin), we must first write a key in a .dcb file

1	writeDcbFile(dcbKey, dcbFilename, description = "", dnames = NA)

`dcbKey`	The dcb data table to write in dcbFilename
`description`	`string` A description of the binData
`dnames`	`Named vector` of display names where each name is a column name and each value is the display name to use. For example: `c("hh" = "Households")` will assign the display name "Households" to column "hh".